BULLETIN
Post-Tropical Cyclone Florence Advisory Number 77
NWS Weather Prediction Center College Park MD AL062018
1100 AM EDT Tue Sep 18 2018
...FLORENCE BECOMING AN INCREASINGLY ELONGATED LOW PRESSURE AREA AS
IT CONTINUES TO PRODUCE HEAVY RAIN OVER PARTS OF THE MID-ATLANTIC
AND INTO SOUTHERN NEW ENGLAND TODAY...
SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION
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LOCATION...42.6N 71.9W
ABOUT 45 MI...70 KM WNW OF BOSTON MASSACHUSETTS
MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H
PRESENT MOVEMENT...ENE OR 70 DEGREES AT 25 MPH...41 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES
WATCHES AND WARNINGS
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SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
There are no coastal watches or warnings in effect.
Flash flood watches are in effect for portions of the Mid-Atlantic
States and southern New England.
DISCUSSION AND OUTLOOK
----------------------
At 1100 AM EDT (1500 UTC), the center of Post-Tropical Cyclone
Florence was located near latitude 42.6 North, longitude 71.9 West.
The post-tropical cyclone is moving toward the east-northeast near
30 mph (41 km/h) and this motion is expected to increase as the low
moves east into the western Atlantic later today.
Maximum sustained winds are near 25 mph (35 km/h) with higher
gusts. The low will transition into a trough off the East Coast
tomorrow.
The estimated minimum central pressure is 1006 mb (29.71 inches).
HAZARDS AFFECTING LAND
----------------------
RAINFALL: Florence is expected to produce heavy to excessive
rainfall from the northern Mid-Atlantic states west into southern
New York and southern New England. Some of these areas are expected
to receive an additional 2 to 4 inches of rain.
For more information on rainfall totals please see the Storm Summary
available at www.wpc.ncep.noaa.gov/discussions/nfdscc4.html
NEXT ADVISORY
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This is the last public advisory issued by the Weather Prediction
Center on this system.
Additional information on this system can be found in High Seas
Forecasts issued by the National Weather Service, under AWIPS
header NFDHSFAT1, WMO header FZNT01 KWBC, and available on the Web
at http://ocean.weather.gov/shtml/NFDHSFAT1.shtml.
Forecaster Carbin
FORECAST POSITIONS AND MAX WINDS
INIT 18/1500Z 42.6N 71.9W 20 KT 25 MPH...POST-TROPICAL
12H 19/0000Z 43.5N 67.7W 25 KT 30 MPH...POST-TROP/EXTRATROP
24H 19/1200Z...DISSIPATED